When we went to look for sofas, we sat on around 200 within a couple of days, and only 3 from next seemed firm enough for proper support, so that is where we bought, everything else was fat soft sinker style sofa, for couchies who can never leave.
garda range in both leather and fabric, both holding up to children well thankfully, garda fabric was washable when it needed to be thankfully also
you can get quidco online for next, but there can be dodgy about paying it if you are not a new customer
we also have the hardford range in various pieces of furniture, it is solid, but self assembly, very solid when made, I like it
-edit we have ikea wardrobes, big builtin jobbies, they are excellent as you can configure as you like, and plenty of other ikea stuff, but it is certainly lighter and cheaper than the next stuff